Process of dyeing textile fabrics.



v iiNirEn sfrArEs l VParEN'r OFFICE.

ERNST srarz. or HAoKENsAoii, .NEW JERsEnAssIGNCm 'ro' uNirEn Pinon DYE Wonne, or Loin, NEW .iEnsEn =a,coiurnnrrioaT or NEW' JERSEY.

PeocEsS oF DYEINGITEXTILE FABRICS'. I

Specification of Letters Patent.

Patented Jan. 22, 1907.

Application filed December 26,1905, Serial No. 298,231.

. i, To all w/Lom, Lt mrt-y concern:

Beit "known that I, ERNST Srri'rz, a'sub- .ject of the German Emperor, and a resident f of Hackensack, countyof Bergen, State of Newv Jersey, have" inventedcertalin new and useful Improvements in Processes of Dyeing f Textile Fabrics, ofwhich the following is a specification. l

My invention relates to the dyeing of ma terials in the nature of strips, bands,'or sheets and articularly to the dyeing of textile mae teria and has for its object to accomplish a uniform dyeing of thc material from end to end and from oneV side to the other.

Great difficulty has been ex erienced hitherto ing dyeing fabrics uniforl y on account of the strength of the bath varying durl ing the operation of dyeing. f To overcome this difficulty, I employ a procedure, such as hereinafter described in detail, which practi-r cally assures a constant strength of the bath, and I further cause the dyeing liquor to-be applied iii such a manner as to produce auniform action on all the portions of the fabric.

In. the accompanying drawingsv I have illustrated an apparatus such as may bel.

used in carrying out my improved process,

4Figure l vbeing a longitudinal sectional elevation of such apparatus, and Fig. 2 an end View with parts 1n section.

Thr apparatus shown comprises a suitable traine A, provided 'wi th brackets A in which are journaled the rollers B B', on which the fabric C is adapted to be lWound. Any suitable mechanism is employed for rotating one roller on thc'other, a pinion B2 boing indicated in Fig. 2. The 'frame A is provided With suitable guideways A?, extending'transversely with respect to the axes of the rollers B B', and in these guideways are adapted to in'ove flanges D of a suitable 'carriage l), which provided with three rollers E E', over which the fabric C is adapted -to pass, asindicated in Fig. 1. The lower roller'E is partly or entirely within a trough F, secured to the carriage I), so as to travel therewith. The particular u/Yay' of attaching the trough shown in the drawings coi'isists of chainsF/f. adapted to be faptened to hooks vD2 on the carriage, and/With this cpnstruction, as will bc readily uhdersto'bd; the trough can be. in v clincd to one side or the'ot er by simply Y. varying the conneption of the hooks Dzwith Y roller'B, as indicated in Fig. l.

the severallinks of the chains F. In Fig. 2 the trough is shown inclined downwardly fromk right to le'ftgbut the opposite inclina- .tion'inay be given the trough just as readily.

With the carriage I) are also connected s'upply-pipes G G of a ilcxible nature, so that' they may follow the movement of the carriage', said pipes being connected y'to stationary pipes II II', the connection of which with the inain supply-pipeH2 is connected by a valve I. This valve is so constructed that' eitheii'the branch H or the branch Hf may be connected with the main supply-pipe.

A steam-jacket I-l3 ory other heating means isy preferably applied te keep the dye liquor at the proper temperature.. Below the trough F is disposed a' tank or vat J of such a width that any liquid overflowing from the trough F will be received in said vat. Thevat is provided with rods or rollers'J, which form guides for thc lfabric C, andl also has an outlet `J2 for withdralwing the liquor at the end of the operation.

At the beginning of the operation the maf terial to b'e dyed isentirely on one of the rollers-for `instance, the roller B.- outer end of the material is then engaged with'. the rollers E -Efand fastened to the The roller B is then rotated in the direction indicated by The" . 4 the arrow, so as to cause the iabric to unwind from the roller B. At this time the carriagc I) should be at the right-hand end` of the apparatus-that is, about d irer-,tlybclow the roller The trough l*` inclined to onel side, and the valve I is opened in such a manner that the d.) c liquor will-flow in at the upper end of the trough. The liquo,r which has been prepared previously flows continuously into the trough F, while the fabric travels th uethrough, and also continuously overflows at the lower end of the trough, suc

ovcrllow being received in the vat J. Owing to this continuous supply'ol' the'liquor and the continuous o\ erlow from the trough uniform dyeing action is obtained.y ,Inasrnueh, however, as the freshA liquor reaches ICO iirst one edge portion of thefabric and then'l travels to the other edge portion transversely bf the fabric, thatedge portion' which is in [o5 lfcontact with the dye liquor first willfnaturally be .dyed somewhat more dee ly than the Y opposite edv'e portion. In or er to comensate for this unequal action, I employ the following procedure: When the fabric' has fabric ina direction opposite to that of its. o'w during y The reversal "of the direction in `which the the tiret etage of the procesa.

fabric travels also compensates for an inequality in the action of the 'dye Awhich is due to the feet that with l constant rate of t revolution of the roller on which the fabric winds the fabric. travels faster and faster.

as the diameter of the portion wound on such rller inereses. Therefore certain portiene ofA thejjabric remain inthe trough F e shorter lengthof time thane'ther portions as the fabric windson: the rollerB but when the direotion'is reversed and the fabric winds on the roller B' those portions which traveled fast ivill travel slowly,and the result is that each portionof the .fabric is subjected to the action ofthe dye in the trough F the same length of time if we add the two periods of time that such portion is within the trough.

At the same time I le-y yin the trough )is constant. during t tion is then repeated in a manner analogous' to that first described-that is, the fabric is i first Wound on one of the rollers B or B and then on the other, reversing the direction oi'y the travel so as to secure a. practically even action of the d e.` f 'The amount of de liquor operatiomandiikewise the amount o f liquor in the vat Jin constant during the time thany the fabric is' passed through such vat;

.The herein scribed improvement in the dyei' of-fabrics, which consists in causing the fa ric to travel irstin one direction and then in the opposite direction through a con@` st'antly renewed andl overilowing hath'of dye ing liquor, collecting the overflow, and thel passing the fabric back and forth through-the collected overflow. l

In testimony whereof I have signed my' name to this specification in the presence o two subscribing witnesses.

ERNST SPTZ. Witnesses: l

D HANS v. BRIESEN,

JOHN Lofi-KA.-

e entire from one or the' 

